JPH08284925A - Fixing clip - Google Patents

Abstract

PURPOSE: To provide a fixing clip which is provided with waterproofing property and enables easy removal of mounting parts. CONSTITUTION: In a fixing clip consisting of a female member 1 in which an inner hole A is drilled from a flange section 2 to a barrel section 3 and a male member 11 having a shaft section 12 to be inserted into the inner hole of the female member, the inner hole of the female member is a rectangular blind hole whose flange side only is opened, and a pair of locking projections 5 are provided on opposing wall faces of the blind inner hole. On the other hand, the width of a tip 12a side of the shaft section of the male member is smaller than interval width of the pair of locking projections, and a pair of overhanging shoulders 14 having the same width as the width of the tip side are provided on the tip side having small width. Moreover, by forming a cut face 16 which allows the rotation of the male member on a side on a diagonal line of each overhanging shoulder, the shaft section of the male member can be pulled out of the blind inner hole of the female member by merely rotating the male member by 90 degrees in the blind inner hole of the female member in the direction in which the cut face does not exist so that a mounting part P1 can be removed from a panel P2 easily.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a two-piece type clip used for fixing various mounting parts of an automobile to a predetermined panel, and more particularly, to an improvement of a waterproof fixing clip.

[0002]

2. Description of the Related Art An example of a conventional two-piece type fixing clip of this type is disclosed in Japanese Utility Model Publication No. 61-37847. The conventional fixing clip is composed of two parts, a female member having an inner hole formed from a flange portion to a body portion and a male member having a shaft portion inserted into the inner hole of the female member. The inner hole has a penetrating shape that opens not only on the flange side but also on the lower end side of the body,
The body portion is divided by a plurality of slits, and locking protrusions are provided on the inner surface of each divided body piece. Further, the latter male member has a structure in which a spiral step portion is provided on the outer circumference of a shaft portion that hangs from the enlarged head portion.

In actual use, after the body portion of the female member is engaged with the mounting hole that is predrilled on the panel side, the inner hole of the body portion and the through hole on the mounting component side are aligned. When the shaft portion of the male member is inserted into the inner hole of the female member while being held, the locking projections of the divided body pieces are engaged with the spiral step portions provided on the shaft portion, and at the same time, the divided body members are Since the piece spreads outward through the slit, the mounting component is thereby fixed to the panel side.

On the contrary, when it becomes necessary to release the fixed state of the mounting component, the male member is rotated in a predetermined direction by utilizing the operation groove formed in the enlarged head of the male member. Then, by the action of the spiral step portion on the shaft side, it becomes possible to pull out the shaft portion of the male member from the inner hole of the female member,
This allows the attachment part to be removed from the panel side.

Therefore, under such a conventional fixing clip,
Not only can the mounting parts be securely fixed to the panel side, but it also has the advantage that the mounting parts can be removed from the panel side if necessary, but on the other hand, the inner hole drilled in the body of the female member penetrates. Not only does it have a shape, but because the body is divided into a plurality of slits so that it can be expanded, it is not suitable for use in locations where waterproofness is required.

Therefore, although not specifically shown, a fixing clip used in a place where waterproofness is required is usually a blind hole having an inner hole bored in the body of the female member and a bottom wall. However, exclusively inside the blind bore,
The structure in which the step provided on the male member side is locked to the locking projection is adopted, but under such a blind hole structure, the mounting part is removed from the panel side as necessary. In this case, the shaft of the male member must be forcibly pulled out from the blind hole-shaped inner hole of the female member, so this time it becomes troublesome to remove the mounting parts, and at the time of removal, the blind hole There was a sufficient risk that the locking projections provided on the wall surface of the inner hole would be damaged and could not be reused.

[0007]

Therefore, in view of such inconvenience, for example, a fixing clip provided separately with a waterproof cap disclosed in Japanese Utility Model Laid-Open No. 2-50508 has been proposed.
That is, this fixing clip uses the same female member and male member as the conventional one described above, but the waterproof cap is provided with a flange portion that abuts the hole edge of the mounting hole of the panel, and the flange portion. The structure is such that the bag portion is opened only on the side of the portion, and in particular, by housing the female member in the latter bag portion, the waterproofness at the connecting portion of the male and female members is not ensured.

Therefore, under the fixing clip provided with such a waterproof cap, for example, a female member and a male member lacking waterproofness are used, so that the waterproofness is sufficiently ensured, and at the same time, the mounting part is attached from the panel side. It is possible to remove it relatively easily, but this time, with the use of the waterproof cap,
Compared with the normal two-piece type, the number of parts and the work process are increased, which is contrary to the current rationalization request.

[0009]

SUMMARY OF THE INVENTION The present invention was developed in order to effectively solve such a conventional problem, and a female member having an inner hole formed from a flange portion to a body portion, and the female member On the premise of a fixing clip consisting of two parts of a male member having a shaft portion to be inserted into the inner hole, the inner hole of the female member is made into a rectangular blind hole which is opened only on the flange side, While providing a pair of locking projections on the opposite wall surfaces of the hole, the tip side of the shaft portion of the male member has a small width smaller than the interval width of the pair of locking projections. A pair of overhanging shoulders with the same width dimension to engage with each locking projection is provided, and a cut surface that allows rotation of the male member is formed on the side portion of each overhanging shoulder diagonally present. did. Further, in this case, it is preferable that the pair of locking projections provided on the opposing wall surfaces of the blind hole-shaped inner hole of the female member are arranged so as to be staggered and staggered.

[0010]

According to the present invention, therefore, when the body portion of the female member is engaged with the mounting hole of the panel and then the shaft portion of the male member is inserted into the blind hole-like inner hole of the body portion, Since the pair of overhanging shoulders provided on the tip end side of the shaft portion of the width dimension are locked to the respective locking projections provided on the wall surface of the blind hole-like inner hole, by this,
The attachment parts are fixed to the panel side under the condition that the waterproof property is sufficiently ensured.

When removing the fixed mounting part from the panel, the male member itself is rotated about 90 ° in the direction in which the cut surface does not exist within the blind hole-shaped inner hole of the female member, and the male member itself is rotated. A pair of overhanging shoulders provided on the tip side of the shaft part rotate in the same direction gradually releasing the locked state with the corresponding locking projections, aided by the existence of the cut surface formed on the shaft part. Then, since it is positioned between the pair of locking projections, it is possible to easily remove the mounting component from the panel side after this by simply pulling out the male member.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to an illustrated embodiment. A fixing clip according to the embodiment also has an inner hole 4 formed from a flange portion 2 to a body portion 3 as shown in FIG. It is premised that the female member 1 and the male member 11 having the shaft portion 12 to be inserted into the inner hole 4 of the female member 1 are made up of two parts. Is the point that adopted.

First, the former female member 1 is an integrally molded product of synthetic resin, and as shown in FIG. 2, an inner hole 4 formed in the body portion 3 having a regular square shape is similar to a flange portion 2 having a similar shape. A blind hole having a square shape with only one side opened, and a pair of locking projections 5 are provided on the opposing wall surfaces of the blind hole-like inner hole 4 in a staggered manner by shifting the positions diagonally. Part 3
On each outer wall surface of itself, a convex portion 6 that is locked to a hole edge is formed in a mounting hole of the panel, and a notch portion 7 that serves as a mark is formed in the center of the edge of the flange portion 2 on the side where the locking projection 5 exists. It is configured to do. It should be noted that the pair of locking projections 5 are provided only over a half range of the wall surface of the body portion 3 as shown in the drawing.

On the other hand, the latter male member 11 is also an integrally molded product of synthetic resin, and as shown in FIG. 3, the facing portion on the tip 12a side of the shaft portion 12 hanging from the enlarged head 13 is chamfered. Then, a linear small width dimension L2 smaller than the interval width L1 of the pair of locking projections 5 is provided, and each locking projection 5 has the same width dimension on both sides of the tip 12a of the small width dimension L2. While providing a pair of overhanging shoulders 14 that are locked to
A tapered guide surface 15 is formed on the lower edges of the pair of overhanging shoulders 14, and a tapered cut surface 16 that allows rotation of the male member 11 is provided on a side portion of each guide surface 15 located on a diagonal line. It is configured to be continuously formed. Further, an operation groove 17 into which a tip end portion of tools is fitted is provided on the upper surface side of the enlarged head 13.

Therefore, the female member 1 and the male member 11 having such a structure
By using a mounting panel P1 such as a bumper to a predetermined panel P
When fixing to the 2 side, the flange portion 2 and each convex portion 6
To hold the female member 1 in the mounting hole H2 of the panel P2.
After engaging the body part 3 of the body part 3, the blind hole-shaped inner hole 4 of the body part 3 and the through hole H1 of the mounting part P1 are aligned with each other, and the protruding shoulder 14 is aligned with the position of the cutout part 7 described above. However, when the shaft portion 12 of the male member 11 is inserted into the blind hole-shaped inner hole 4 of the body portion 3,
As shown in FIG. 4, while the center of the wall portion on the side where the locking projections 5 are provided is expanded outward, the pair of overhanging shoulders 14 can smoothly pass through the locking projections 5 in a staggered state. Therefore, the shaft portion 12 of the male member 11 can be inserted into the blind hole-shaped inner hole 4 without using such a strong insertion force.

Further, after passing through the locking projections 5, as shown in FIG. 5, each of the overhanging shoulders 14 automatically locks to the lower surface of the corresponding locking projection 5, so that the waterproof property is sufficiently improved. The mounting part P1 is fixed to the panel P2 side under the condition that the engaging projections 5 are secured to each other. Even though the force is reduced, a strong locking force for the locking projection 5 of the overhanging shoulder 14 can be obtained.

When the fixed mounting part P1 is removed from the panel P2, the tip of a tool (not shown) is inserted into the operation groove 17 attached to the enlarged head 13 of the male member 11. Then, when the male member 11 itself is rotated about 90 ° in the blind hole-shaped inner hole 4 in the direction in which the cut surface 16 does not exist, the presence of the diagonally formed cut surface 16 helps As shown, the narrow tip 12 of the shank 12
The pair of overhanging shoulders 14 provided on the a side rotate in the same direction while gradually releasing the locked state with the corresponding locking projections 5, and are positioned between the pair of locking projections 5. Therefore, after that, by simply pulling out the shaft portion 12 of the male member 11 from the blind hole-shaped inner hole 4 as it is, the mounting component P1 can be easily removed from the panel P2 side. Moreover, the male and female members 1 and
Since there is no concern that the 11 side will be damaged or deformed, it can be reused sufficiently.

In the above embodiment, the male member 11
A pair of locking projections 5 for locking the side projecting shoulders 14 are arranged on the opposite wall surfaces of the body portion 3 of the female member 1 in a staggered manner by displacing the positions in the range of 1/2 thereof. But,
It is also possible to dispose the pair of locking projections 5 in a state where they are completely opposed to each other over the entire area of the opposite wall surfaces. However, if the pair of locking protrusions 5 are arranged so as to be staggered with each other as in the embodiment, the following advantages can be provided in addition to the advantage that the insertion force can be reduced. Becomes

That is, in order to obtain a strong locking force with the overhanging shoulder 14, it is preferable that the lower end edges of the pair of locking projections 5 are at right angles as shown in the figure. When the edge is formed by using the slide type split mold structure, as shown in FIG. 7, the split piece 21 corresponding to the locking projection 5 is formed.
The portion 21a of is a rabbit, and at least the locking protrusion 5
Since the thickness L3 necessary for strength can be given to the portion 21b of the split piece 21 where no split exists, this can greatly contribute to the improvement of the durability of the split mold itself. Therefore, in consideration of the durable thickness of the split piece 21, as in the case of disposing the pair of locking projections 5 completely facing each other across the entire wall surfaces of the blind hole-shaped inner hole 4, the split mold structure has a large size. Since it is not necessary to reduce the size of the female member 1, the size of the female member 1 itself can be freely adjusted, and the worry of being restricted by the design can be eliminated.

[0020]

As described above, according to the present invention, by adopting the above-described structure, it is possible to sufficiently secure the waterproof property without using the conventional waterproof cap and at the same time, to remove the mounting component from the panel. Therefore, it goes without saying that it will be practically useful, but especially when removing the mounting parts, it is sufficient to rotate the male member by 90 °,
The work of removing the mounting parts is also extremely easy.

Further, as shown in the embodiment, when the pair of locking projections are arranged so as to be staggered on the diagonal line so as to be staggered, the shaft portion of the male member is a blind hole on the female member side. Since the work of inserting it into the inner hole can be easily done, workability can be expected to be improved from this point as well, and under the sliding split mold structure, the required thickness of the split piece can be secured sufficiently, so the split die It will also contribute to the improvement of the durability of itself.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a fixing clip according to an embodiment of the present invention.

2A is a plan view of a female member, and FIG. 2B is A of FIG. 2A.
-A line sectional drawing, (C) is a BB line sectional view of Drawing 2A.

3A is a front view of the male member, FIG. 3B is a side view of the same, FIG.
FIG. 3C is a sectional view taken along the line CC of FIG. 3B.

FIG. 4 is an explanatory view showing a state in which the front end side of the male member is inserted into the blind hole-shaped inner hole of the female member.

5A is a cross-sectional view showing a state in which a mounting component is fixed to a panel, and FIG. 5B is a state in which a pair of projecting shoulders provided on a shaft portion side of a male member are locked to corresponding locking projections. FIG.

FIG. 6 is an explanatory diagram showing a state in which the male member is rotated and the pair of overhanging shoulders is released from the locked state with the locking projection of the blind hole-like inner hole.

FIG. 7 is an explanatory view showing an example of a sliding split mold structure for molding a female member.

[Explanation of symbols]

 1 Female member 2 Flange part 3 Body part 4 Blind hole inner hole 5 Locking protrusion 6 Convex part 11 Male member 12 Shaft part 12a Small width tip of shaft part 13 Enlarged head 14 Overhanging shoulder 16 Cut surface 17 Operation groove P1 mounting Parts H1 Through hole P2 Panel H2 mounting hole

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yusuke Noda 2 Takara-cho, Kanagawa-ku, Yokohama-shi, Kanagawa Nissan Motor Co., Ltd.

Claims (2)

[Claims] 1. A fixing clip composed of two parts, a female member having an inner hole formed from a flange portion to a body portion, and a male member having a shaft portion inserted into the inner hole of the female member. Is formed as a rectangular blind hole that is open only on the flange side, and a pair of locking projections is provided on the opposite wall surfaces of the blind hole-shaped inner hole, while the tip side of the shaft portion of the male member is connected to the pair of engaging holes. A small width smaller than the interval width of the stopper projections is provided, and a pair of overhanging shoulders for locking the locking projections with the same width is provided on the tip side of the small overhang, and A fixing clip characterized in that a cut surface that allows rotation of a male member is formed on a side portion on a diagonal line. 2. A pair of locking projections provided on the opposite wall surfaces of the blind hole-shaped inner hole of the female member are arranged so as to be staggered with their positions shifted diagonally. The fixing clip shown.